Home / 5,180.27-7,154.87-4,121.60

Finding the Fourth Proportional to 5,180.27, 7,154.87 and 4,121.60

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Solution

The fourth proportional to 5,180.27, 7,154.87 and 4,121.60 is: 5,692.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.27 : 7,154.87 = 4,121.60 : x
  2. Step 2: Convert to fraction form
    5,180.27/7,154.87 = 4,121.60/x
  3. Step 3: Cross multiply
    5,180.27x = 7,154.87 × 4,121.60
  4. Step 4: Simplify right side
    5,180.27x = 29,489,455.81
  5. Step 5: Solve for x
    x = 29,489,455.81/5,180.27
  6. Step 6: Final answer
    x = 5,692.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.